package demo4;

/**
 * @Author 12629
 * @Description：
 */
public abstract class MicroPhone implements IUSB{

    public abstract void test();
}

class ITest extends MicroPhone {

    @Override
    public void openDevice() {

    }

    @Override
    public void closeDevice() {

    }

    @Override
    public void test() {

    }
}
